I could go on and on but one of the major things of the 30's was the dust bowls...
D seems the most likely because ammonia is not as natural a substance as the others
A. it made us self sufficient for years afterwards
Answer:
I think it is the 3rd choice sorry if im wrong
Explanation:
Classical civilizations created "monuments" to honor wealth and powerful individuals, since these monuments were intended both to inspire the citizens and to intimidate foreign nations.
